Sleep is essential for a person’s wellbeing. Researchers have found that sleep loss increases a person’s risk of developing serious medical conditions. Now, a new study has found that getting enough sleep is also the key to improving academic performance.
Jeffrey Grossman, who led the research, was not trying to find the correlation (相关性) between sleep and grades when he handed out Fitbits to the students in his class. Instead, the professor hoped the popular wrist-worn electronic device (装置), which tracks a person’s activity 24/7, would show a connection between physical exercise and academic achievement.
As part of the research, a quarter of the participants chose a fitness class specially created for the study. After the school term ended, the researchers carefully analysed the data. Much to Grossman’s surprise, they found no measurable difference in test performance between the group that had been physically active and the group that had not.
However, the study presented a surprising viewpoint in the journal Science of Learning. Going through the large amount of data, Grossman noticed an interesting trend (走向) from the participants sleep patterns. There was a straight-line relationship between the average amount of sleep and his/her grade on the exams.
Besides, it was not enough for students to just head to bed early the night before a test. Grossman says: “We’ve heard the phrase ‘Get a good night’s sleep, you’ve got a big day tomorrow.’ It turns out this does not relate at all to test performance. Instead, it’s the sleep you get during the days when learning is happening that matters most.”
The time students went to bed each night was similarly important. Those who went to bed in the early hours of the morning performed poorly, even if the total sleep time was the same as a higher-performing student.
The research does not prove that sleep is the only component that helps improve academic performance. However, Grossman says the results are a strong indication that sleep really matters. Who knew getting A’s just required some extra ZZZ’s?
1.What’s Grossman’s original purpose by using Fitbits in the research?
A.To improve students sleep patterns.
B.To regulate students’ daily behavior.
C.To monitor students’ physical condition.
D.To find effects of physical exercise on grades.
2.What did Grossman think of the research result?
A.It was unexpected. B.It was changeable
C.It was unreliable. D.It was fruitless.
3.What plays a more important part in test performance?
A.Sleep in the learning stage. B.Average amount of sleep during tests.
C.Sleep quality the night before the test. D.A regular bedtime.
4.What is the best title for the text?
A.Be Physically Active and Sleep More
B.Enough Sleep Benefits Our Wellbeing
C.Catch ZZZ’s for Good Test Performance
D.The More Exercise, the Better Schoolwork
Japans biggest airline is betting that the future of travel isn't traveling at all. For the last month, a married couple has been interacting with a robot -called an Avatar -that's controlled by their daughter hundreds of miles away. Made by ANA Holdings Inc. it looks like a cleaner with an iPad attached But the screen displays the daughter's face as they chat, and its wheels let her move slowly about the house as though she's really there.
"Virtual travel"is nothing new, of course. Storytellers, travel writers and artists have stimulating(刺激)the sense of armchair tourists for centuries. It's only in recent decades that frequent, safe travel has become available to the non-wealthy.
Yet even as the world's middle classes climb out of the armchair and into economy-class seats, there are signs of a post-travel society coming into being. Concerns about sustainability(可持续发展)are having an negative influence on carbon-intensive airlines. And the aging of wealthy societies is both slowing down physical travel and creating demand for various ways to experience the world. For the travel industry, virtual (虚拟的)reality offers an attractive response to these trend.
Of course, far- out technologies encourage far-out claims. ANA doesn't plan to start selling Avatars until next year. Profits, too, will probably be difficult to achieve: according to one investigation, the global market for this kind of technology will be worth only about $300 million by 2023. By contrast, ANA's traditional travel business brought in more than $19 billion last year .
But if the business case for virtual vacations is still weak, the market for technologies that bridge physical distances between families and coworkers seems likely to soy expand.ANA's robots may not replace its airplanes any time soon, but they ' ll almost certainly be a part of travel’s high-tech future.
1.“Avatar” is mentioned in paragraph 1 to_________.
A.display how people travel with the robot “Avatar”.
B.introduce a new service offered by Japan's biggest airline.
C.lead in the topic of virtual travel by providing a vivid scene.
D.describe what the robot"Avatar" looks like and how it works.
2.It can be inferred from paragraph 3 that people's choice of virtual travel may be the result of________.
A.the demand for safe travel
B.wealthy people's growing old
C.worries about low-carbon airlines
D.the support of advanced technologies
3.By saying “far-out technologies encourage far-out claims”, the writer means_______.
A.traditional travel business is not profitable
B.global market for virtual travels is hard to predict
C.the time is ripe for selling Avatars in term of technology
D.virtual travels will take the place of traditional ones very soon
4.What's the writer's attitude to virtual technology?
A.Uncertain. B.Cautious.
C.Enthusiastic. D.Optimistic.
Book Your Field Trip to Pacific Science Center
A field trip to Pacific Science Center is a time-honored tradition for students of all ages across Washington State. Our hands-on exhibits, shows, and creative programs inspire students’ curiosity for science in a day of exploration meant to strengthen your curriculum and fuel lifelong enthusiasm for science, math, engineering and technology.
Schedule (安排) Your Field Trip
To schedule your field trip, complete the registration request form available at the link www.pacificsciencecenter.org/field-tripsl/, or call (206) 443-2925 Monday — Friday from 8:30 a.m. to 4:30 p.m. not less than two weeks ahead of your visit date. We will contact you within two business days to set up your field trip.
New Fall/winter Hours
Starting September 3, 2019 PacSci will be closed on Mondays and Tuesdays except for holidays and weeks during Seattle Public School breaks. We will no longer be booking field trips on those days, as well.
Pricing
Field Trip Package |
| Price Per Student |
Exhibits Only |
| $9 |
Package 1 | Exhibits plus choice of one experiences | $11 |
Package 2 | Exhibits plus choice of two experiences | $13 |
Package 3 | Exhibits plus choice of three experiences | $15 |
One free adult general admission is covered for every 10 paid students. Free adult admission doesn’t include IMAX documentary. These adults will be charged a $4 IMAX documentary admission. Additional adults outside of the ratio (比例) will be charged the student admission rate. Pacific Science Center Memberships cannot be applied to field trips. Payment is due one week before you visit.
Available Experiences
■ Planetarium Shows
■ IMAX Documentaries
■ Science on a Sphere Shows
■ Laser Shows
1.What can we know about Pacific Science Center?
A.It is famous for its typical architecture.
B.It offers students chances for free classes.
C.It’s where students can learn about science.
D.It is only accessible to students in Washington.
2.If 2 teachers and 10 students watch exhibits and IMAX Documentaries, how much will they at least pay?
A.$118. B.$125.
C.$127. D.$134.
3.When can we reserve a field trip by phone?
A.On weekends.
B.Any Monday or Tuesday.
C.Two workdays ahead of the visit time.
D.At least 14 days before the actual visit.
假设你是红星中学高三学生李华，你的英国朋友Jim在给你的邮件中提到他对中国文化感兴趣，计划明年来北京上大学。他向你咨询相关信息。请给他回邮件，内容包括：
1.表示欢迎；
2.推荐他上哪所大学；
3.建议他做哪些准备工作。
注意：1.词数100左右；
2.开头和结尾已给出，不计人总词数。
Dear Jim,
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Yours,
Li Hua
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有 10 处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均仅限一词；
2. 只允许修改 10 处，多者(从第 11 处起)不计分。
The other day, I was as usually walking Toby when suddenly the dog ran up to the little boy. It kept jump up, trying to get a bite of the hamburger the boy holding. It happens so fast that all I could do was shout, “Stop, Toby!” But it was too later, Toby had taken a bite from the boy’s hamburger. I felt very guilty. It was my fault which Toby wasn’t under control. So I apologized sincerely to the frightening boy and his angry mother. Through this incident I realized that I had to train his dog to behave in itself.
阅读下面短文，在空白处填入 1 个适当的单词或括号内单词的正确形式。
Last month, we explored some wonderful places in two cities in Poland: the capital and largest city of Warsaw and the historic city of Krakow. Since Poland has more 1. (offer), we will take a closer look at one of the country’s most interesting cities and give an 2. (introduce) to it.
Located on the Baltic Sea coast and the mouth of the Vistula River, Gdansk functions 3. a major port city. It is known to many as the amber capital of the world. Amber, a kind of fossilized tree sap(汁液), 4. (preserve) in the extremely cold waters of the Baltic Sea, with pieces 5. (frequent) washed up along its shores. Along with the city’s natural resources, the architecture in Gdansk exposes its diverse history of being ruled by a few foreign 6. (country). Gdansk is also famous for one of the largest trade shows and fairs in the world. 7. (last) three weeks in August, this event attracts millions of visitors every year and offers the Polish national dishes made with 8. (vary) meats and vegetables.
The best time to visit Poland is during the summer months, 9. last from June through August. Winters are quite cold, but that is 10. benefit if skiing, ice skating, sledding or other winter sports are your passion(酷爱的事物).
